Combined earth scraper, spreader, and dumper



K. A. SPIETH' COMBINED EARTH kCRAPER, SPREADER, AND DUMPER May 16, 1939.

Filed April 18, 1938 2 Sheets-Sheet l y 16, 1939- K. A. SPIE-TH 2,158,340

COMBINED EARTH SCRAPER, SPREADER, AND DUMPER Filed April 18, 1938 2 Sheets-Sheet 2 8g Karl H. fipl mlh'. J x attorney Patented May 16, 1939 UNI-TED sTA Es PATENT; OFFICE 2,158,340 COMBINED EARTH SCRAPER, srnnanm, AND BUMPER t I Karl Spieth, Omaha, Nebr.

Application April 18, 1938, Serial 6' Claims. (01. 37440) This invention relates 'to an improved construction for an earth scraping, spreading and preparing land for irrigation. Machines similar to the present invention have heretofore been used to greater or lesser advan One of the specific objects oi'the invention is to provide means on the front end of the scraperof the inclination of the scraper-blade.

Another object is to provide meanson the front of the scraper-beam for I the automatic maintenance of the scraper bladeat a selected degree of inclination during the operationv of spreadscraping. said means tocally as far as possible.

The invention consists of the features of construction, combination and ardetailsfsaid changes being within the scope of the invention as claimed.

In thedrawings, I

Fig. 1 is a perspective view of a combined earth-scraper. load-carrier, spreader and dumper embodying'my invention.

Fig. 2 is an end view of the or ground-engaging bodyoi'thescraper, and Fig. 3 is a view taken at right angles to the view line 55 of Fig. 4 Referring now this k1 described.

in nd consist of a scraper-beam H and a forwardly movable draw-bar I2 which is usually attached to. a tractor (not shown),

its

which are procentrally of Since the scraping is efiected while the machine is drawnforwardly after The ends purpose being the arms I3 of the beam ll.

The horizontal bar "is a part or a rockframe adapted to be moved in one direction by a pull-rope 20 under control or an operator and to be swung in a reverse direction by action of aspring 2|. Q I

The rock-framewconsists of a pair of inclined, connected truss-bars a, securedvat their outer ends to. the horizontal pivotally mounted bar l8, supported by an upright brace-bar b carried he'scraper-beam ll, and the spring 2| is secured at its respective ends to one of the base strips d and swing-bar 22.

general use on machines of Numerai indicates a linlr pivotallymounted 4 55 brace-bar b.

The parts thus described for preventing or permitting rotation of the cylindrical bowl 6 have heretofore been in general use and no part thereof is claimed in the present invention except the fact that the lugs l5 and IS on the ends 8 of the bowl are provided with rollers e, and these lugs are disposed inwardly of the periphery of each end 8, this being to avoid vibration and providing durability in wear. Also it has been found to be of advantage to provide adjustments for the stop-lug l6, so

' that the distance between them may be increased at any desired angle relative or decreased, and for this purpose apertures a: are formed, at suitable radial distances from the trunnions, in said ends 8 for use when making said adjustments.

Asthus described, a forward movement of the pull-rope!!! against the force of the spring 2| maycause release of the lugs H from the stoplugs i5, and a forward movement of the machine will permit a continued rotation of the bowl 6 on the ground so long as the rock-frame andits lugs H are under control of the: forwardly moved pull-rope 20. However, when the forward pull of the rope ceases, the rock-frame together with the lugs H, by action of the spring 2!, will engage the stop-lugs IE to permit dumping The present invention includes means attached to the front end of the scraper-beam, best shown in Figs. 4 and 5, whereby the blade l0 may be set to the surface of the ground, and therefore material, to any practical depth, may be removed, and the depth, according to this improved construction, may vary from the fraction of an inch to several inches. depending upon the density (such as hard clay or loose sand) of the material. Also as will be described, the parts for operation, for the most part, are under automatic control so that the operator may give his attention to driving. Also according to the present invention no stresses will be directed to the cylindrical bowl 6 except to prevent rotation thereof.

To attain these objects I provide a head-piece 23 for the front end of the machine, said head piece being pivotally mounted on the beam H by the pivot-pin 23, and provided with a slot 25, and also is provided, in alinement with numerous notches 26.

Numeral 21 indicates a clevis pivotally mounted by a vertical pin on the draw-bar it, said clevis also being provided with ahorizontal pivotpin 29 which engages in the slot of the headpiece.

Numeral 30 indicates a looking-bar which is disposed in the channel of the clevis and is pivotally mounted therein as indicated at 3!. and by means of a spring 32 the locking-bar will nor mally be pressed toward the head-piece so that its lug 33 may enter any selected notch 26 there- Means are provided for elevating or lowering the front end of the beam ll together with the head-piece 23, and since the rock-frame, together with the control-lugs I1 and scraper-beam Ii will move as a unit, the depth to which the blade l0 may enter the ground may be controlled by the vertical movements of said beam H.

For instance, if it is desired that-the blade It shall enter the ground at a lesser depth than before, the beam II and its head 23 may be swung upwardly, unit as mentioned, the upward movement of great advantage for the extension and since the parts move .as'a of the control-lugs I! will roll the bowl 6 rearwardly a. limited distance for elevating the blade. Also if itis desired that the blade It shall enter the ground at an increased depth, the beam H and head-piece may be swung downwardly to cause the control-lugs H to move downwardly, the result being that the control-lugs I! will move downwardly a limited distance from the stoplugs Hi to permit the blade ID to enter the ground to said increased distance.

During the operations last described, the pullrope 20 is not used, and the spring 2| will normally cause the control-lugs to remain in engagement with the lugs l5: If the head-piece 23 swings downwardly the cylindrical bowl 6 will have a limited rolling movement forwardly occasioned by traction of the moving machine. the angle of the blade l0 therefore being changed and caused to enter the ground deeper than before.

The notches 26 of the head-piece are suitably spaced apart so that the swinging movements mentioned for said beam and head-piece will cause limited movements of the control-lugs l'l, sufficient to permit the blade III to enter the ground a suitable distance.

Numeral '34 indicates an adjusting-link pivotally mounted at 35 on the upper end of the head-piece 23, the lower end of said link being adjustably mounted on the beam ll, said link being provided longitudinally with apertures 36 and aholder element or pin 31 being used and removably mounted in a suitable aperture formed in the beam for engagement in a selected aperture 38 of said link, and therefore 23 may be disposedat a suitable angle relative to the beam H, and may be maintained station ary relative to said beam, the locking-bar so being used for maintaining the head-piece and beam at a suitable altitude after said beam has been elevated or lowered.

On account of the degree of'incli'nation which may be selected for the head-piece 23, a forward movement of the draw-bar l2 and clevis 21 will cause the beam H to swing locking-bar has been released, and a downward swinging movement of these parts will be effected by gravity after the locking-bar is released from the notches 26 of the head-piece.

A modified means for elevating and lowering the beam II is shown in Fig. 4 of thedrawings, said means consisting of an arrangement of compound levers, and this may be used to advantage in instances when the metallic parts of the rockframe and scraper-beam are of unusual proper-- similar in all respects to the lever 33 is also employed and is pivotaliy mounted at one of its its opposite end II the same or ends on the end of lever 4| and is mounted pivotally on the beam similar to the mounting thereon of said lever 34. According to this arrangement of compound levers. an upward swinging movement of the lever 38.wil1 cause a downward swinging movement of the beam II. A pull-and-push rod 44 is provided tioned may be under control of the operator. Numeral 45 indicates a-pull-rope foruse in releasing the loclclng-bar 30.

In operation, the pin or bolt 23 willibe pressed 39 so that the movemeritsmenforwardly in the slot 25 by .the forward movement of the draw-bar J2 and clevis 21 and on account of the inclination of the slot 25 the beam able features of the locking-bar with the hatches 26 of the head-piece, the bowl 8 may be maintained at a suitable inclination for earth-scraping and earth-spreading or for conducting the load of material to be dumped, the dumping, as exuse of the pull-rope which releases the control-lugs l1 from the lugs I5.

The adjustments provided by the keeper 31 and line of apertures 36 in the link 34 is an advantage treated.

The advantage in the fact that it causes a more rapid movement of the ment of said link will cause immediate release of the control-lugs from the stop-lugs 15 for the reason that the link is pivoted at 41 between the vided beam provided with control-lugs for engaging the stop-lugs of said bowl, a

slot of the head-piece, a link on the beam pivoted to the clevis, and a locking-bar movable on the clevis for engaging and controlling the movements of the head-piece.

3. An earth-scraping, spreading and dumping machine comprising a horizontal, cylindrical bowl-member divergent arms said bowl-member, a forwardly drawn clevisprovided with a horizontal pivot-pin, a slotted headpiece provided with notches and pivotallymountnotch of said head-piece. 4. An earth-scraping, spreading and dumping machine comprising a horizontal, cylindrical of the bowl-member, a swingable frame on the beam having control-lugs for engaging the stop-lugs of the bowl-member, a forwardly head-piece.

5. An earth-scraping, spreading and dumping machine, comprising, in combination with a forprovided with stop-lugs, a beam wardly drawn clevis-member provided with a keeper, a horizontal, cylindrical bowl-member arranged for swinging movements having controllugs for engaging the stop-lugs of the bowl-memher, a head-piece pivotally mounted on the beam having a slot for receiving the keeper of the clevis and provided with notches, a link mounted on the disposing the headiece with its slot at an acute angle relative to saidbeam, and a locking-bar movable on the clevis for engaging in a selected notch 01' the head-piece.

6. In an earth-scraping, spreading and dumppivotally mounted on the ends forwardly of the bow,

forwardly relative to said beam, co-operating means on the head-piece and clevis for controlling a movement of the head-piece relative to said clevis, and a rock-frame on said beam provided with control-lugs for engaging the stop-lugs of said bowl.

' KARLA. SPIETH. 

